Improvement of field emission properties of α-Fe2O3 nanoflakes due to the lowered back contact barrier after high energy X-ray irradiation
- 1. State Key Lab of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China)
- 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
Description
Improvement in the field emission properties of α-Fe2O3 nanoflakes is observed after high energy X-ray irradiation from synchrotron radiation. Field emission threshold field of α-Fe2O3 nanoflakes is found to decrease from 10.1 to 7.8 MV/m after X-ray irradiation with the dose of 9.0 × 1014 phs/cm2. Electrical measurement reveals that the potential barrier at the back contact between the α-Fe2O3 layer and the iron substrate changes after X-ray irradiation. The observed threshold field decrease is well explained by the changes in potential barrier at the back contact of α-Fe2O3 nanoflakes, which indicates the back contact plays an important role in controlling the field emission properties of α-Fe2O3 nanoflakes. Our study shows that the α-Fe2O3 nanoflakes are a promising material for the application as field emitter under X-ray environment
Additional details
Identifiers
- DOI
- 10.1063/1.4831672;
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 114
- Journal Issue
- 18
- Journal Page Range
- p. 184306-184306.11
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45038836
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ELECTRIC CONDUCTIVITY; FERRITES; FIELD EMISSION; IRON OXIDES; IRRADIATION; LAYERS; NANOSTRUCTURES; SUBSTRATES; SYNCHROTRON RADIATION; X RADIATION
- Descriptors DEC
- BREMSSTRAHLUNG; CHALCOGENIDES; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; EMISSION; FERRIMAGNETIC MATERIALS; IONIZING RADIATIONS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2013 AIP Publishing LLC